HUBBELL LIGHTING Dual-Lite TRX MBC User manual

Dual-Lite®TRX™MBC™
User Manual–10-30kVA, 60Hz

i
TABLE OF CONTENTS
IMPORTANT SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
SAVE THESE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.0 MECHANICAL INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Preliminary Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3 Environmental Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3.1 Room . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3.2 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.4 Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.4.1 Moving the Cabinets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.4.2 Clearances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.4.3 Floor Installation/Anchoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.5 Cable Entry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.6 Power Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.6.1 Power Cable Connection Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.0 INSTALLATION DRAWINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3.0 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
3.1 Electrical Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.2 Torque Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
FIGURES
Figure 1 Cabinet arrangement—Dual-Lite TRX UPS, battery cabinets, maintenance bypass cabinet . . . . 7
Figure 2 One-line diagram, single-input, three-breaker Dual-Lite TRX MBC, 10-30kVA . . . . . . . . . . . . . 10
Figure 3 Bend radius—Neutral and ground wires through bottom feed, 10-30kVA system. . . . . . . . . . . . 10
Figure 4 Main components—200mm Dual-Lite TRX MBC, three breakers, 10-30kVA system . . . . . . . . . 11
Figure 5 Outline drawing—200mm Dual-Lite TRX MBC, three breakers, 10-30kVA system . . . . . . . . . . 12
Figure 6 Terminal details—200mm Dual-Lite TRX MBC, three breakers, 10-30kVA system . . . . . . . . . . 13
Figure 7 Control wiring diagram, Dual-Lite TRX MBC, three breakers, with interlock. . . . . . . . . . . . . . . 14
Figure 8 Solenoid key release unit, 200mm Dual-Lite TRX MBC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

ii
TABLES
Table 1 Control wiring for Dual-Lite TRX UPS to Dual-Lite TRX MBC . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 2 Breaker confirugation—200mm Dual-Lite TRX MBC, three breakers, 10-30kVA system . . . . . 11
Table 3 Terminal block details—200mm Dual-Lite TRX MBC, three breakers, 10-30kVA system . . . . . 11
Table 4 Breaker configuration—200mm Dual-Lite TRX MBC, three breakers, 10-30kVA system . . . . . 13
Table 5 Terminal block details—200mm Dual-Lite TRX MBC, three breakers, 10-30kVA system . . . . . 13
Table 6 Dual-Lite TRX MBC specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Table 7 Dimensions for Dual-Lite TRX UPS with Dual-Lite TRX MBC. . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Table 8 Additional weight for Dual-Lite TRX 10-30kVA UPS with internal batteries *. . . . . . . . . . . . . . 17
Table 9 Dual-Lite TRX MBC input currents, single input, main . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 10 Dual-Lite TRX MBC output currents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 11 Weights—Dual-Lite TRX UPS, 10-30kVA, and 200mm Dual-Lite TRX MBC . . . . . . . . . . . . . . . 17
Table 12 Recommended lug sizes (Compression Type) M12, 1/2" bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 13 Recommended lug sizes (compression type) M10, 3/8" bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 14 Busbar torque for power wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 15 Terminal block torque with compression lugs for control wiring. . . . . . . . . . . . . . . . . . . . . . . . . . 19

Important Safety Instructions
1 Dual-LIte®TRX™MBC™
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This manual contains important instructions that should be followed during installation of your
Dual-Lite TRX Maintenance Bypass Cabinet (MBC).
!
WARNING
Risk of moving heavy units and tipping hazard. Can cause equipment damage, injury and
death.
Exercise extreme care when handling cabinets to avoid equipment damage or injury to
personnel. The Dual-Lite TRX MBC’s weight ranges from 198 to 700 lb. (89.9 to 317.5 kg).
Locate center of gravity symbols and determine unit weight before handling each
cabinet. Test lift and balance the cabinets before transporting. Maintain minimum tilt from
vertical at all times.
Slots at the base of the cabinets are intended for forklift use. Base slots will support the unit
only if the forks are completely beneath the unit.
In case of fire involving electrical equipment, use only carbon dioxide fire extinguishers or
those approved for use in fighting electrical fires.
Extreme caution is required when performing maintenance.
Be constantly aware that the system contains high DC as well as AC voltages.
Check for voltage with both AC and DC voltmeters prior to making contact.
!
AVERTISSEMENT
Le centre de gravité élevé des appareils présente un risque de renversement lors des
déplacements pouvant entraîner des dommages matériels, des blessures et même la mort.
Faites preuve d’une extrême prudence lors de la manutention des armoires afin d’éviter de les
endommager ou de blesser le personnel. Les armoires de dérivation d’entretien TRX de Dual-
Lite pèsent de 198 à 700 lb (de 89.9 à 317.5 kg).
Identifiez les symboles de centre de gravité et déterminez le poids de l’appareil avant de
manipuler chaque armoire. Testez le levage et l’équilibre des armoires avant de transporter
l’appareil. Maintenez en tout temps l’inclinaison verticale minimale.
Les fentes situées à la base des armoires sont conçues pour utiliser le chariot élévateur. Les
fentes situées à la base peuvent soutenir le système seulement si les fourches se trouvent
complètement sous le système.
En cas d’incendie associé à du matériel électrique, n’utilisez que des extincteurs à dioxyde de
carbone ou homologués pour la lutte contre les incendies d’origine électrique.
Les opérations d’entretien requièrent une extrême prudence.
Soyez toujours conscient du fait que le système contient des tensions c.c. et c.a. élevées.
Vérifiez les tensions avec des voltmètres c.a. et c.c. avant d’établir tout contact.

Important Safety Instructions
Dual-LIte®TRX™MBC™2
Read this manual thoroughly before working with the Maintenance Bypass Cabinet. Retain this
manual for use by installing personnel.
!
WARNING
Risk of arc flash and electric shock. Can cause equipment damage, injury and death.
Under typical operation and with all doors closed, only normal safety precautions are
necessary. The area around the system should be kept free of puddles of water, excess
moisture and debris.
Special safety precautions are required for procedures involving handling, installation and
maintenance of the Maintenance Bypass Cabinet. Observe all safety precautions in this
manual before handling or installing the Maintenance Bypass Cabinet. Observe all
precautions in the Operation and Maintenance Manual, before as well as during performance
of all maintenance procedures.
This equipment contains circuits that are energized with high voltage. Only test equipment
designed for troubleshooting should be used. This is particularly true for oscilloscopes. Always
check with an AC and DC voltmeter to ensure safety before making contact or using tools.
Even when the power is turned Off, dangerously high potential electric charges may exist.
All power and control wiring should be installed by a qualified electrician. All power and
control wiring must comply with the NEC and applicable local codes.
ONLY properly trained and qualified personnel should perform maintenance on the Maintenance
Bypass Cabinet. When performing maintenance with any part of the equipment under power,
service personnel and test equipment should be standing on rubber mats. The service personnel
should wear insulating shoes for isolation from direct contact with the floor ground.
One person should never work alone, even if all power is removed from the equipment. A
second person should be standing by to assist and summon help in case of an accident.
!
AVERTISSEMENT
Risque d’arc ou de décharge électrique pouvant entraîner des dommages matériels, des
blessures et même la mort.
Les précautions de sécurité habituelles suffisent lorsque le système est en mode de
fonctionnement normal et que toutes les portes sont fermées. La zone entourant le système
doit être exempte de flaques d’eau, d’humidité excessive et de débris.
Des précautions de sécurité spéciales sont requises pour les procédures associées à la
manutention, à l’installation et à l’entretien de l’armoire de dérivation d’entretien. Observez
toutes les précautions de sécurité décrites dans le présent manuel avant de manipuler ou
d’installer l’armoire de dérivation d’entretien. Observez également toutes les précautions
décrites dans le manuel d’utilisation et d’entretien, avant et pendant toutes les procédures
d’entretien.
Cet équipement comporte des circuits à haute tension. Seuls des équipements d’essai conçus
pour le dépannage doivent être utilisés. Cette mise en garde couvre notamment les
oscilloscopes. Utilisez toujours un voltmètre c.a. et c.c. pour vérifier les tensions avant
d’établir un contact ou d’utiliser des appareils. Des tensions dangereusement élevées peuvent
demeurer dans le système même une fois l’alimentation coupée.
Tous les câbles d’alimentation et de contrôle doivent être installés par un électricien qualifié.
Tous les câbles d’alimentation et de contrôle doivent être conformes au Code national de
l’électricité des États-Unis (NEC) et ainsi qu’aux codes locaux en vigueur.
L’entretien de l’armoire de dérivation d’entretien ne doit être confié qu’à des professionnels
qualifiés et dûment formés. Les responsables de l’entretien et l’équipement d’essai doivent
reposer sur des tapis de caoutchouc lors de toute intervention sur une pièce d’équipement sous
tension. Les responsables de l’entretien doivent porter des chaussures isolantes pour prévenir
tout contact direct avec le plancher.
Une personne ne devrait jamais travailler seule, même si toute l’alimentation de l’équipement
est coupée. Une deuxième personne devrait toujours être présente pour porter assistance ou
chercher de l’aide en cas d’accident.

Mechanical Installation
3 Dual-LIte®TRX™MBC™
1.0 MECHANICAL INSTALLATION
1.1 Introduction
This section describes the requirements that must be taken into account when planning the
positioning and cabling of the Dual-Lite TRX MBC.
This chapter is a guide to general procedures and practices that should be observed by the installing
engineer. The particular conditions of each site will determine the applicability of such procedures.
NOTICE
Risk of improper installation. Can cause equipment damage and void warranty.
The Dual-Lite TRX MBC should be installed by a qualified engineer in accordance with the
information contained in this chapter
All equipment not referred to in this manual is shipped with details of its own mechanical and
electrical installation.
Do not apply electrical power to the UPS equipment before the arrival of the commissioning
engineer.
1.2 Preliminary Checks
Before installing the Dual-Lite TRX MBC, carry out the following preliminary checks:
• Visually examine the equipment for transit damage, both internally and externally. Report any
damage to the shipper immediately.
• Verify that the correct equipment is being installed. The equipment supplied has an identification
tag on the back of the main door reporting: the type, size and main calibration parameters of the
UPS.
• Verify that the room satisfies the environmental conditions stipulated in the equipment
specifications, paying particular attention to the ambient temperature and air exchange system.
!
WARNING
Risk of arc flash and electric shock. Can cause equipment damage, injury and death.
Installation must be performed only by properly trained and qualified personnel wearing
appropriate safety clothing.
Eye protection should be worn to prevent injury from accidental electrical arcs. Remove rings,
watches and all other metal objects. Only use tools with insulated handles. Wear rubber
gloves.
!
AVERTISSEMENT
Risque d’arc ou de décharge électrique pouvant entraîner des dommages matériels, des
blessures et même la mort.
L’installation ne doit être confiée qu’à des professionnels qualifiés et dûment formés portant
des vêtements de sécurité adéquats.
Des lunettes de sécurité doivent être portées afin de prévenir les blessures en cas d’arcs
accidentels. Retirez montre, bagues et tout autre objet métallique. Utilisez uniquement des
outils dont le manche est isolé. Portez des gants de protection en caoutchouc.

Mechanical Installation
Dual-LIte®TRX™MBC™4
1.3 Environmental Considerations
1.3.1 Room
The Dual-Lite TRX MBC is intended for indoor installation and should be located in a cool, dry, clean-
air environment with adequate ventilation to keep the ambient temperature within the specified
operating range (see 3.0 - Specifications).
All models of the Dual-Lite TRX MBC are convection-cooled. To permit air to enter and exit and
prevent overheating or malfunctioning, do not cover the ventilation openings.
When bottom entry is used, the conduit plate can be removed and punched and replaced. The bottom
conduit plate must be replaced for proper airflow. If necessary to cool the room, install a system of
room extractor fans.
1.3.2 Storage
Should the equipment not be installed immediately, it must be stored in a room for protection against
excessive humidity and or heat sources (see Table 6).
1.4 Positioning
The cabinet is structurally designed to handle lifting from the base.
Access to the power terminals, auxiliary terminals blocks and power switches is from the top and
sides.
The top and side removable panels are secured to the chassis by screws. The side panel can be
removed for access to the power connections bars, auxiliary terminal blocks and power isolators.
1.4.1 Moving the Cabinets
The route to be travelled between the point of arrival and the unit’s position must be planned to make
sure that all passages are wide enough for the unit and that floors are capable of supporting its
weight (for instance, check that doorways, lifts, ramps, etc. are adequate and that there are no
impassable corners or changes in the level of corridors).
Ensure that the cabinet weight is within the designated surface weight loading (kg/cm2) of any
handling equipment. See Table 8 for the weight of the Dual-Lite TRX MBC 200mm, 300mm, 600mm,
and 800mm models. Tables 7 through 9provide detailed dimension and weight information for the
Dual-Lite TRX UPS and Dual-Lite TRX MBC when they are bolted together and shipped as a system.
Ensure that any lifting equipment used in moving the cabinet has sufficient lifting capacity.
The Dual-Lite TRX MBC can be handled by means of a fork lift or similar equipment. For operations
with a fork lift, refer to installation drawings in 2.0 - Installation Drawings.
Because the weight distribution in the cabinet is uneven, use extreme care during handling and
transporting.
When moving the unit by forklift, care must be taken to protect the panels. Do not exceed a 15-degree
tilt with the forklift.
Handling the unit with straps is not authorized.
NOTE
The Dual-Lite TRX MBC is suitable for mounting only on concrete and other noncombustible
surfaces.
!
WARNING
Risk of moving heavy units and tipping hazard. Can cause equipment damage, injury and
death.
Exercise extreme care when handling cabinets to avoid equipment damage or injury to
personnel. The Dual-Lite TRX MBC’s weight ranges from 198 to 700 lb. (89.8 to 317.5 kg).
Locate center of gravity symbols and determine unit weight before handling each
cabinet. Test lift and balance the cabinets before transporting. Maintain minimum tilt from
vertical at all times.

Mechanical Installation
5 Dual-LIte®TRX™MBC™
1.4.2 Clearances
Dual-Lite TRX MBC’s have no ventilation grilles at either side or at the rear. Clearance around the
front of the equipment should be sufficient to enable free passage of personnel with the doors fully
opened. It is important to leave a distance of 24" (610mm) between the top of the cabinet and any
overhead obstacles to permit adequate circulation of air coming out of the unit.
1.4.3 Floor Installation/Anchoring
The installation diagrams in 2.0 - Installation Drawings of this manual identify the location of the
holes in the base plate through which the equipment can be bolted to the floor. If the equipment is to
be located on a raised floor it should be mounted on a pedestal suitably designed to accept the
equipment point loading.
1.5 Cable Entry
Cables can enter the Dual-Lite TRX MBC from the bottom or top.
!
AVERTISSEMENT
Le centre de gravité élevé des appareils présente un risque de renversement lors des
déplacements pouvant entraîner des dommages matériels, des blessures et même la mort.
Faites preuve d’une extrême prudence lors de la manutention des armoires afin d’éviter de les
endommager ou de blesser le personnel. Les armoires de dérivation d’entretien TRX de
Dual-Lite pèsent de 198 à 700 lb (de 89.8 à 317.5 kg).
Identifiez les symboles de centre de gravité et déterminez le poids de l’appareil avant de
manipuler chaque armoire. Testez le levage et l’équilibre des armoires avant de transporter
l’appareil. Maintenez en tout temps l’inclinaison verticale minimale.

Mechanical Installation
Dual-LIte®TRX™MBC™6
1.6 Power Cables
The Dual-Lite TRX MBC requires both power and control cabling once it has been mechanically
installed. All control cables must be separate from the power cables. Run control cables in metal
conduits or metal ducts that are electrically bonded to the cabinets they are connected to.
The cable design must comply with the voltages and currents provided in Tables 10 through 13,
follow local wiring practices and take into consideration the environmental conditions (temperature
and physical support media).
For cable entry locations, refer to Figure 5.
The following are guidelines only and are superseded by local regulations and codes of practice where
applicable:
• Take special care when determining the size of the neutral cable (grounded conductor), because
current circulating on the neutral cable may be greater than nominal current in the case of
nonlinear loads.
• The grounding conductor should be sized according to local or NEC codes, cable lengths, type of
protection, etc. The grounding cable connecting the UPS to the main ground system must follow
the most direct route possible.
• Consider using smaller, paralleled cables for heavy currents as a way of easing installation.
!
WARNING
Risk of electric shock. Can cause equipment damage, injury and death.
Before cabling up the cabinet, ensure that you are aware of the location and operation of the
external isolators that connect the input/bypass supply.
Check that these supplies are electrically isolated, and post any necessary warning signs to
prevent their inadvertent operation.
!
AVERTISSEMENT
Risque de décharge électrique pouvant entraîner des dommages matériels, des blessures et
même la mort.
Avant de procéder au câblage de l’armoire, assurez-vous que vous êtes au courant de
l’emplacement et du fonctionnement des isolateurs externes qui raccordent l’alimentation
d’entrée ou de dérivation.
Vérifiez que ces raccords sont isolés électriquement et installez tous les panneaux
d’avertissement nécessaires pour empêcher leur utilisation accidentelle.

Mechanical Installation
7 Dual-LIte®TRX™MBC™
Figure 1 Cabinet arrangement—Dual-Lite TRX UPS, battery cabinets, maintenance bypass cabinet
NOTE
The 200mm maintenance bypass cabinet ships attached to the UPS.
The 600mm maintenance bypass cabinet ships separately from the UPS.
Dual-Lite
TRX
UPS
Dual-Lite
TRX
UPS
Dual-Lite
TRX
UPS
Maintenance
Bypass
Cabinet
(Matching)
Battery
Cabinet
(Matching)
Additional
Battery
Cabinet
(Matching)
Maintenance
Bypass
Cabinet
(Matching)
If a maintenance bypass
cabinet is used, it must be
installed on the right side of
the Dual-Lite TRX UPS.

Mechanical Installation
Dual-LIte®TRX™MBC™8
1.6.1 Power Cable Connection Procedure
The system input, UPS bypass, UPS output and system output cables (all require lug type
terminations) are connected to power blocks behind the power isolator switches as shown in 2.0 -
Installation Drawings. These are accessible when the side or top panel is removed.
Equipment Ground
The equipment ground busbar is near the input and output power supply connections as shown in
2.0 - Installation Drawings. The grounding conductor must be connected to the ground busbar.
All cabinets and cable trunking should be grounded in accordance with local regulations.
Once the equipment has been finally positioned and secured, connect the power cables as described in
the following procedure.
Refer to the appropriate cable connection drawing in 2.0 - Installation Drawings.
1. Verify that the bypass equipment is isolated from its external power source and all the power
isolators are open. Check that these supplies are electrically isolated and post any necessary
warning signs to prevent their inadvertent operation.
2. Remove the panels.
3. Connect the ground and any necessary main bonding jumper to the equipment ground busbar.
!
WARNING
Risk of electric shock. Can cause equipment damage, injury and death.
Failure to follow adequate grounding procedures can result in electric shock hazard to
personnel and the risk of fire, should a ground fault occur.
!
AVERTISSEMENT
Risque de décharge électrique pouvant entraîner des dommages matériels, des blessures et
même la mort.
Le non-respect des procédures de mise à la terre peut entraîner des risques d’électrocution du
personnel, ou des risques d’incendie en cas de défectuosité de la mise à la terre.
!
WARNING
Risk of electric shock. Can cause equipment damage, injury and death.
The operations described in this section must be performed by authorized electricians or
properly trained and qualified technical personnel wearing adequate safety clothing, eye
protection and gloves.
If you have any difficulties, do not hesitate to contact Dual-Lite®.
!
AVERTISSEMENT
Risque de décharge électrique pouvant entraîner des dommages matériels, des blessures et
même la mort.
Toutes les opérations décrites dans cette section ne doivent être effectuées que par des
électriciens ou des techniciens professionnels dûment formés et qualifiés portant gants,
lunettes et vêtements de protection adéquats.
En cas de problème, n’hésitez pas à communiquer avec Dual-Lite®.
NOTE
Proper grounding considerably reduces problems in systems caused by electromagnetic
interference.
NOTE
The grounding and neutral bonding arrangement must be in accordance with local and
national codes of practice.
NOTE
Care must be taken when routing power cables. Ensure that the cables do not touch other
busbars.

Mechanical Installation
9 Dual-LIte®TRX™MBC™
4. Connect the AC input supply cables between the power distribution panel and the Maintenance
Bypass input supply busbars (A-B-C or A-B-C-N terminals) and tighten the connections to the
proper torque (see Table 14). Ensure correct phase rotation!
5. Connect the UPS Input
a. For two-breaker Dual-Lite TRX MBC’s
i. If the system is a two-input type, connect the AC input supply cables between the Dual-
Lite TRX MBC and the UPS bypass input supply busbars (A-B-C or A-B-C-N terminals)
and between the power distribution panel and the UPS rectifier input supply busbars
(A-B-C or A-B-C-N terminals). Tighten the connections to the proper torque. Ensure
correct phase rotation!
ii. If the system is a single-input type, connect the AC input supply cables between the Dual-
Lite TRX MBC and the UPS bypass input supply busbars (A-B-C or A-B-C-N terminals)
and connect AC jumper connectors between UPS bypass input supply busbars and UPS
rectifier input supply busbars (A-B-C terminals). Tighten the connections to the proper
torque (see Table 14). Ensure correct phase rotation!
6. Connect the system output power cables between the Dual-Lite TRX MBC output (A-B-C or A-B-
C-N terminals) and the critical load and tighten the connections to the proper torque (see
Table 14). Ensure correct phase rotation!
7. Connect the control wiring from the Dual-Lite TRX MBC terminal block TB1 to the Dual-Lite
TRX UPS Bypass Module (X9 J23 and J26). Tighten the connections to the proper torque (see
Table 14).
8. Replace the panels.
Notes
Refer to the Dual-Lite TRX UPS installation manual, SL-25648 for additional details about the
Dual-Lite TRX 10-30kVA UPS. The manual is available from Dual-Lite.
The following are guidelines only and are superseded by local regulations and codes of practice where
applicable.
• Take special care when determining the size of the neutral cable, because current circulating on
the neutral cable may be greater than nominal current in the case of non-linear loads.
• The ground conductor should be sized according to local or NEC codes, cable lengths, type of
protection, etc. The ground cable connecting the UPS to the main ground system must follow the
most direct route possible.
• Consideration should be given to the use of smaller, paralleled cables for heavy currents, as a way
to ease installation.
• In most installations, the load equipment is connected to a distribution network of individually
protected busbars fed by the Dual-Lite TRX MBC output rather than being connected directly to
the Dual-Lite TRX MBC itself. Where this is the case, the Dual-Lite TRX MBC output cables can
be rated to suit the individual distribution network demands rather than being fully load-rated.
• When laying the power cables, do not form coils to avoid increasing formation of electromagnetic
interference.
Table 1 Control wiring for Dual-Lite TRX UPS to Dual-Lite TRX MBC
From Dual-Lite TRX
UPS Bypass Module
(X9 J23 and J26) To Dual-Lite TRX MBC Terminal Block (TB1)
J26-15 TB1-6
J26-13 TB1-5
J26-11 TB1-4
J26-9 TB1-3
J23-3 TB1-9
J23-4 TB1-11
J23-6 TB1-12

Installation Drawings
Dual-LIte®TRX™MBC™10
2.0 INSTALLATION DRAWINGS
Figure 2 One-line diagram, single-input, three-breaker Dual-Lite TRX MBC, 10-30kVA
Figure 3 Bend radius—Neutral and ground wires through bottom feed, 10-30kVA system
MAINTENANCE BYPASS CABINET
MIBBIB
MBB
*Bypass
AC Input
4 Wire + GND
AC Output
208V or 220V
4 Wire + GND
Static Bypass
UPS CABINET
BATTERY
Output
Busbar
NOTES:
1. Install in accordance with national and local electrical codes.
2. Input and bypass must share the same single source.
3. A neutral is required from the system AC input source.
A full capacity neutral conductor is recommended. Grounding
conductors are recommended.
4. Bypass and rectifier inputs and output cables must be
run in separate conduits.
5. Control wiring must be run in separate conduits.
BIB - Bypass Isolation Breaker
MBB - Maintenance Bypass Breaker
MIB - Maintenance Isolation Breaker
* External Overcurrent Protection by Others
Field-Supplied Wiring
When attaching neutral and ground wires
from the bottom feed, connection must
be made to the top of the neutral and
ground busbar for required bend radius.
Neutral Busbar
Ground Busbar

Installation Drawings
11 Dual-LIte®TRX™MBC™
Figure 4 Main components—200mm Dual-Lite TRX MBC, three breakers, 10-30kVA system
Table 2 Breaker confirugation—200mm Dual-Lite TRX MBC, three breakers, 10-30kVA system
Dual-Lite TRX MBC
Breaker Configuration Configured Breaker
3 — BIB MBB MIB
Table 3 Terminal block details—200mm Dual-Lite TRX MBC, three breakers, 10-30kVA system
Terminal Block Single Input System
TB2 Input
TB3 Output
78.8"
(2001mm)
7.9"
(200mm)
37.5" (953mm)
Neutral
Busbar
MIB
MBB
BIB
TB2
TB3
Ground
Busbar
LEFT SIDE
Panel Removed
RIGHT SIDE
Panel Removed
FRONT
Door Removed
TB4 -Dual Input Systems

Installation Drawings
Dual-LIte®TRX™MBC™12
Figure 5 Outline drawing—200mm Dual-Lite TRX MBC, three breakers, 10-30kVA system
NOTES:
1. All dimensions are in inches (mm).
2. 24" (610) minimum clearance above unit and
36" (914) front access required for service.
3. Keep cabinet within 15 degrees of vertical.
4. Top and bottom cable entry available through removable
access plates. Remove, punch to suit conduit size
and replace.
5. Unit bottom is structurally adequate for forklift handling.
6. Control wiring and power wring must be run in
separate conduits.
7. All wiring is to be in accordance with national and local
electrical codes.
Leveler
DETAIL A
TOP VIEW BOTTOM VIEW
FRONT VIEW RIGHT SIDE VIEW
39.1" (993mm)
7.8"
(200mm)
8.2"
(208mm)
See
Detail A
34.3"
(872mm)
4.7"
(119mm)
Ventilation
Conduit
Landing
Conduit
Landing

Installation Drawings
13 Dual-LIte®TRX™MBC™
Figure 6 Terminal details—200mm Dual-Lite TRX MBC, three breakers, 10-30kVA system
Table 4 Breaker configuration—200mm Dual-Lite TRX MBC, three breakers, 10-30kVA system
Dual-Lite TRX MBC
Breaker Configuration Configured Breaker
3 — BIB MBB MIB
Table 5 Terminal block details—200mm Dual-Lite TRX MBC, three breakers, 10-30kVA system
Terminal Block Single Input System
TB2 Input
TB3 Output
NOTES
1. All dimensions are in inches (mm).
2. Control wiring and power wiring must
be run in separate conduits.
3. All wiring is to be in accordance with
national and local electrical codes.
4. If the maintenance bypass cabinet is attached
to the UPS, Dual-Lite will supply the
interconnection cables.
BOTTOM VIEW TOP VIEW
LEFT SIDE VIEW
Panel Removed
FRONT VIEW
Door Removed
RIGHT SIDE VIEW
Panel Removed
Neutral
Busbar
Ground
Busbar
Conduit Landing
Conduit
Landing
37.5" (953mm)
MIB
BIB
TB2
TB3
MBB

Installation Drawings
Dual-LIte®TRX™MBC™14
Figure 7 Control wiring diagram, Dual-Lite TRX MBC, three breakers, with interlock
NOTES:
1. Customer furnished electrode conductor to be installed in accordance
with national and local electrical codes.
2. See installation manual for additional connection information.
3. Overcurrent protection is based on 80% rated devices.
4. MBB auxiliary switch connections are on the normally closed and common positions.
5. MIB auxiliary switch connections are on the normally opened and common positions.
6. MBC when connected to UPS module, all control and power wiring is supplied by Dual-LIte.
If the MBC is remote from the UPS module, the cables between the MBC and UPS module
must be supplied by others.
7. Optional SKRU and associated wiring (703, 704, 706).
8. Shown is typical for a four-breaker configuration. Also available: a two-breaker configuration
(MIB, MBB) and a three-breaker configuration (BIB, MIB, MBB).
MBB See Note 6Customer Feed
Output
Neutral
AC
Output
Kirk
Key K2
Kirk
Key K1
MIB
See Note 7
From
Utility Output
Ground
Ground to
Unit Frame
Ground to
Unit Frame
Optional
See Note 9
Input Neutral
See Note 1
SKRU - Solenoid Key Release Unit
KO-Key Operator
Main Ground Busbar
Field-Supplied Wiring Inner Door
Factory-Supplied Wiring
ØA
ØB
ØC
ØA
ØB
ØC
ØA
ØB
ØC
SKRU
RIB
BIB
W04
W05
W06
W87
W86
W85
W90
W89
W88
W08
W09
TB1
Fuses, 2
Lamp
AC 120V 704
710
Push
Button
K0
UPS
Fuse
AC Output
AC Input
Aux
702
2A
A
B
C
A
B
C
mN
PE
X9J24
MFP_O 1
MFP_S 3
MFP_C 5
Main_abnl_O 2
Main_abnl_S 4
Main_abnl_C 6
X9J23
BFP_O 1
BFP_S 3
BFP_C 5
INV_O 2
INV_S 4
INV_C 6
X9J26
GND_Dry 15
Q5_Status 13
GND_Dry 11
Q5_Status 9
Wiring shown for a four-breaker system.
Refer to Note 8 for three-breaker
configurations.
Detail A
DETAIL A

Installation Drawings
15 Dual-LIte®TRX™MBC™
Figure 8 Solenoid key release unit, 200mm Dual-Lite TRX MBC
K0
K1
K2
TB1
Fuseblock
for SKRU
Solenoid key release unit
is mounted between the
BIB and MBB breakers.

Specifications
Dual-LIte®TRX™MBC™16
3.0 SPECIFICATIONS
Table 6 Dual-Lite TRX MBC specifications
Model Size 10-30kVA UPS
Input Parameters
Input Voltage to Bypass, VAC 208/120V or 220/127V, 3-Phase, 4-Wire
Input Current, AAC Refer to Table 10
Input Frequency, Hz 60
Output Parameters
Output Power, kW 10-30
Output Voltage, VAC 208/120V, 3-Phase, 4-Wire
Output Current, AAC Refer to Table 11
Output Frequency, Hz 60
Physical Parameters and Standards, in (mm)
Cabinet Width, in. (mm)
with side panels attached 8.2 (208)
Depth, in. (mm) 39.4 (1000)
Height, in. (mm) 78.74 (2000)
Weight, lb. (kg) 198 (90)
Color Black (ZP-7021)
Degree of Protection for UPS
Enclosure IP 20 (with and without front door open)
Standards and Conformities UL1778 5th Edition; CSA 22.2 107-3-14; ISTA Procedure 1H; WEEE
Minimum Clearance, Top, in. (mm) 24 (610)
Minimum Clearance, Back, in. (mm) 0
Minimum Clearance, Sides, in. (mm) 0
Cable Entrance Top or Bottom
Environmental Parameters
Storage Temperature Range, °F (°C)-13 to 158 (-25 to 70)
Operating Temperature Range, °F
(°C)0 to 40 (UPS)
Relative Humidity Maximum 95% Non-Condensing (Operating and Non-Operating)
Maximum Altitude above MSL, ft. (m) Refer to UPS Manual, SL-25648 or SL-26100
Table 7 Dimensions for Dual-Lite TRX UPS with Dual-Lite TRX MBC
Components
UPS Rating, kVA
10-30
Dimensions, WxDxH, in. (mm)
UPS Only 23-5/8 x 39-1/2 x 78-3/4
(600 x 1000 x 2000)
UPS with 200mm MBC 31-1/2 x 39-1/2 x 78-3/4
(800 x 1000 x 2000)